Although no mismatch was indicated for 8/16 wide sub-pixel filters
in issue 661, they had similar problems that could cause mismatch
potentially. This patch fixed calculations in HORIZx8/16
and VERTx8/16.

Change-Id: I169961c9d40a20340995b7d22aafc89ccf30bfca

Change-Id: I00a5203c8ed76c184d936fccf93d76e7c06773d3

In commit "3d50da53", the stack
pointer was modified while aligning the stack, and it needed to
be pop out at the end.

Change-Id: I062971e195f1f2ab9d0ab5fb84dcf215a0fcaa67

Patch in https://gerrit.chromium.org/gerrit/#/c/41176/
was merged into repository by mistake.

Change-Id: I235c71af26bb2d72698c8aac2301e5a7e9c5f960

There are many places in handle_inter_mode that need to restore the
dst buffer pointers, due to buffer pointer swap and early rd search
breakout. This commit wraps these operations into an inline function
for clean-up.

Change-Id: I0462e8c41c8bc3cd8db07395489cac03d8e5be54

Change-Id: I473947b5ca70b7a81151926284bff86f8555492a

This patch fixed issue 661: "Decoder produces mismatched outputs
with ssse3 enabled and disabled." In sub-pixel filters, a pixel
value was multiplied by a filter coefficient, and the results
were added up. The order of adding up these multiplications had to
be arranged carefully to prevent incorrect overflowing.

Change-Id: Id08af4200fea9e1b896fc40157b8651c2c7e80f2

Change-Id: Ifad4b0e6355ce49fcc6f470becc080e8069452ee

As it is used in encoder only.

Change-Id: I5f2a8abbe72bb18cbf6ce36a3dc7e132aeae8ec2

Change-Id: Ic316d3374ff9a2b43897272260947d56765a0fdd

Change-Id: I64b189dfeee1cf3e90134a1a93497072f3361e5e

Change-Id: I6f6ba91b1b8b280902b171472314d665aa0baf0b

Reversing bit order of partition_context_lookup, and modifying accordingly
update_partition_context() and partition_plane_context().

Change-Id: I64a11f1a94962a3bf217de2f50698cb781db71a5

The bug was introduced in 00a35aab. The reading of raw yuv input frame
was off by 4 bytes.

Change-Id: I6923ea5528aa529a47a06b64adca8f94847f19a6

- Move it to webmdec.c and webmdec.h.
- Also, tidy up obvious style nits in the vicinity of code I was
  already touching.

Change-Id: Ie2898d06e73c1e9030d9c8d465b73ee7edc3c02a

There is no need to use that function, it is much clear to pass offset
directly to the buffer.

Change-Id: I9026cb0c5094c46f97df5d7f7daeb952f2843b24

Change-Id: I23fea0a2e85be8373600e3e2dae98d36acde389c

This rebase is a better implementation of the previous ones.

Modifications are done to reduce the total clock cycle.
Speedup: 1.341
Compiled with -O3
Tested with: park_joy_420_720p50.y4m

Change-Id: I940eaf283f60597ca0d9d2e13d518878d55ff02d

Change-Id: I568f5e2d4ef2f2affe013ba1691ffb546f1fe8c6

Change-Id: Id578a5fe2039631cefd82dc2ef98cc62683194c3